c# - Invalid Index. Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX) when Workbooks.Open -

i trying make app open xlsx file reading, , read , stuff it. when run app, , click button load file, getting error:

invalid index. exception hresult: 0x8002000b (disp_e_badindex)

on line of code:

excel.workbook    = excelapp.workbooks.open("c:\\test.xlsx", 0, true, 5, "", "", true,                              microsoft.office.interop.excel.xlplatform.xlwindows,                              "\t", false, false, 0, true, 1, 0); 

can suggest wrong here?

edit: here full code hope easier tell causes error

 using system;  using system.collections.generic;  using system.componentmodel;  using system.data;  using system.drawing;  using system.linq;  using system.text;  using system.windows.forms;  using excel = microsoft.office.interop.excel;  using system.reflection;    namespace windowsformsapplication2  {      public partial class form1 : form, idisposable      {          public form1()          {              initializecomponent();          }           private void button1_click(object sender, eventargs e)          {              excel.application excelapp = new excel.application();              excelapp.visible = true;               excel.workbook = excelapp.workbooks.open("c:/test.xlsx");           // selectes used range of excel workbook , enters in         // 2 dimentional array         try         {             // reference first sheet of workbook.             excel.sheets excelsheets = a.worksheets;             string currentsheet = "sheet1";             excel.worksheet excelworksheet = (excel.worksheet)excelsheets.get_item(currentsheet);              // write out console debugging             textbox1.text = "excelworksheet " + excelworksheet;              // range of data.             excel.range excelcell = (excel.range)excelworksheet.get_range("a3", missing.value);              // write out console debugging             textbox1.text = "excelcell " + excelcell;              // write out console debugging             textbox1.text = "creating string[,] array. . . ";             // retrieve data range.             object[,] dataarray;             // write out console debugging             textbox1.text = "string[,] array created. . . ";              dataarray = (system.object[,])excelcell.get_value(missing.value);              // write out console debugging             textbox1.text = "counting rows , columns. . . ";             // determine dimensions of array.             int irows;             int icols;             irows = dataarray.getupperbound(0);             icols = dataarray.getupperbound(1);              // write out console debugging             textbox1.text = "printing array. . . ";             // print data of array.             (int rowcounter = 1; rowcounter <= irows; rowcounter++)             {                 // write out console debugging                 textbox1.text = ("row " + rowcounter);                 (int colcounter = 1; colcounter <= icols; colcounter++)                 {                      // write next value console.                     richtextbox1.text = "col " + colcounter + "= " + dataarray[rowcounter, colcounter].tostring() + ", ";                 }                 // write in new line.                 richtextbox1.text = "\n";              }         }         catch (exception theexception)         {             // create error message             string errormessage;             errormessage = "error: ";             errormessage = string.concat(errormessage, theexception.message);             errormessage = string.concat(errormessage, " line: ");             errormessage = string.concat(errormessage, theexception.source);             // display error message             messagebox.show(errormessage, "error");          }         }     }   }